EDTA 2NA CAS 6381-92-6 Disodium edetate dihydrate
Disodium edetate dihydrate (CAS 6381-92-6), inowanzonzi EDTA-2NA, ndiyo divalent sodium salt form ye ethylenediaminetetraacetic acid (EDTA) uye ndiyo inonyanya kushandiswa mukutengeserana yeEDTA. Edta disodium salt dihydrate chinhu chinowanzo shandiswa chelating agent. Hunhu hwayo hukuru ndehwekuti inogona kugadzira complexes dzakagadzikana dzinonyungudika mumvura dzine ma ions akasiyana-siyana esimbi. Saka, edta 2na inoshandiswa zvakanyanya mumaindasitiri akadai semaindasitiri, mishonga, uye makemikari ezuva nezuva.
Edta-2na chena crystalline powder, inonyungudika mumvura, isinganyungudike mu ethanol ne ether, pH yemvura yayo inobuda inenge 5.3.
| CAS | 6381-92-6 |
| Mamwe Mazita | Disodium edetate dihydrate |
| Chitarisiko | upfu chena |
| Kuchena | 99% |
| Ruvara | upfu chena |
| Kuchengetera | Kuchengetera Zvinhu Zvakaomeswa Zvinotonhorera |
| Pasuru | 25kg/dhiramu |
1. Chikamu chemaindasitiri (chine huwandu hwakawanda)
Mushonga wekurapa mvura: Edta disodium salt dihydrate ndeimwe yenzira huru dzinoshandiswa. EDTA-2na inoshandiswa mumvura inotenderera mumaindasitiri, mvura yebhoyila, mvura yedziva rekushambira, nezvimwewo. Nekuchekerera Ca²⁺ uye Mg²⁺ (maion emvura akaoma) mumvura, inodzivirira kuumbwa kwechiyero. Panguva imwe chete, inochekerera maion esimbi akadai seFe³⁺ neCu²⁺, ichiadzivirira kuti asakonzere kuoxidation uye kuora kwezvinhu zvipenyu mumvura uye kuderedza ngura yemapaipi.
Kugadziriswa kwesimbi: Edta-2na inoshanda semugadziri wekugadzirisa ma electroplating solutions (chelating metal ions kuti ive nechokwadi chekuti yakabatana), muchina wekuchenesa simbi (kubvisa ma oxides nema scale kubva pamusoro pesimbi kudzivirira metal ions kuti isakanganise kuchenesa), uye mubatsiri wekudhinda nekudhaya machira (chelating metal ions mumvura kudzivirira kudhaya kusina kuenzana kwemachira uye kudzikira kwekumhanya kwemavara).
Sipo/Mushonga wekuchenesa: edta disodium salt dihydrate inowedzerwa muhupfu hwekuwachisa, mvura yekuwachisa ndiro, uye mishonga yekuchenesa yeindasitiri se "chinopfavisa mvura" - ichiisa maion emvura akaoma mumvura kuti iwedzere kugona kwekubvisa tsvina yemasipo uye kudzivirira kuumbwa kwe "soap scum" (senge sipo yecalcium isinganyunguduke inogadzirwa nesipo neCa²⁺).
2. Munda weChikafu (Zvimwe Zvinoenderana Nezvinodiwa)
Edta disodium salt dihydrate, sechikafu chinowedzera (chinotenderwa kushandiswa muChinese GB 2760), chinoshanda se "stabilizer, antioxidant, metal chelating agent":
Kune zvinwiwa (zvakaita sezvinwiwa zvine carbonated uye muto wemichero): Chelate metal ions dzakadai seFe³⁺ naCu²⁺ kudzivirira kuti zvisakonzere oxidation uye kuora kwevhitamini C, nokudaro zvichiwedzera nguva yekugara kwayo.
Pachikafu chakabikwa mumagaba nemasosi: edta-2na inodzivirira kunyungudika kwemaion eFe mumidziyo yesimbi (yakadai setinplate), ichidzivirira chikafu kuti chisashanduke ruvara uye chisachinje kunaka kwacho.
Pamafuta nezvikafu zvakakangwa: edta-2na inochera maion esimbi kudzivirira oxidation uye rancidence yemafuta (zvichikonzera kuravira kwakashata).
Cherechedza: Muyero wemunyu we disodium weEDTA wemhando yechikafu unofanirwa kudzorwa zvakanyanya (kazhinji ≤0.05-0.2g/kg, zvichisiyana nechikamu chechikafu), uye kuchengetedzeka kwawo kwakabvumidzwa neCodex Alimentarius Commission (CAC).
3. Nzvimbo yekurapa
Zvinhu zvinobatsira pakurapa: Edta-2na inoshanda se "stabilizer" yekubaiwa majekiseni nezvinwiwa zvinonwiwa - ichibvisa huwandu hwema ions esimbi mumushonga wemvura (senge ma ions eFe neCu anounzwa panguva yekugadzira), ichidzivirira ma ions esimbi kuti asakonzere kuora kwemishonga (senge mishonga inorwisa mabhakitiriya nemishonga yemavhitamini), uye ichiona kushanda zvakanaka uye kuchengetedzeka kwemishonga.
Mushonga wekubvisa simbi inorema: EDTA-2NA inoshandiswa kurapa chepfu yesimbi inorema (yakadai sechepfu yemutobvu uye chepfu yemercury) - nekubaya disodium EDTA netsinga, maion esimbi ane chepfu akadai sePb²⁺ neHg²⁺ mukati memakemikari ayo anonyungudika mumvura uye anoburitswa nemuweti.
Kurapa Mazino/Zvizoro: Mvura yekudiridza midzi inoshandiswa mukurapa mazino (inochenura Ca²⁺ mu dentin, inonyorovesa dentin, uye inobatsira kuchenesa); Se "simbi inosimbisa simbi" muzvizoro, inodzivirira simbi kuti isakonzere kuoxidation uye kuchinja ruvara rwezvigadzirwa zvekuchengetedza ganda.
4. Mimwe minda
Kurima: Edta disodium salt dihydrate, semushonga wekuwedzera mafetiraiza etrace element - inochera zvinhu zvakakosha zvakaita seFe, Zn, neMn zvezvirimwa, inowedzera kunyunguduka kwazvo muvhu, uye inobatsira kunyudzwa kwemiti (kudzivirira kusimba kwevhu).
25kg/dhiramu, matani 9/mudziyo we20'
CAS 6381-92-6 edta 2na vatengesi
CAS 6381-92-6 edta 2na vatengesi
